<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        li{
            list-style: none;
        }
        .one{
            width: 200px;
            height: 200px;
            background-color: red;
            float: left;
        }
        .two{
            width: 200px;
            height: 200px;
            background-color: blue;
            float: left;
        }
        .three{
            width: 200px;
            height: 200px;
            background-color: green;
            float: right;
        }
        .four{
            width: 300px;
            height: 300px;
            background-color: pink;
            /* float: right; */
        }
        .five{
            margin: 50px auto;
            width: 1226px;
            height: 628px;
            background-color: red;
        }
        .left{
            width: 234px;
            height: 628px;
            background-color: rgb(69, 136, 230);
            float: left;
        }
        .right{
            width: 978px;
            height: 628px;
            background-color: pink;
            float: right;
        }
        .right li{
            float: left;
            margin-right: 14px;
            margin-bottom: 14px;
            padding: 0;
            width: 234px;
            height: 300px;
            background-color: #7d7d7d;
        }
        .right li:nth-child(4n){
            margin-right: 0;
        }
    </style>
</head>
<body>
    <div class="one">
        我是第一个div
    </div>
    <div class="two">
        我是第二个div
    </div>
    <div class="three">
        我是第三个div
    </div>
    <div class="four">
        我是第四个div
    </div>

    <div class="five">
        <div class="left"></div>
        <div class="right">
            <ul>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
                <li></li>
            </ul>
        </div>
    </div>
</body>
</html>